Add g10 support to rl78-tdep.c.
The g10 is an rl78 variant which has fewer registers. Aside from the obvious addition of a new register_name() function which omits registers which the g10 lacks, this change also updates the return_value() function with the conventions specified by the ABI for finding and setting return values. * rl78-tdep.c (rl78_g10_register_name): New function. (rl78_return_value): Add g10 support. (rl78_gdbarch_init): Register rl78_g10_register_name for the g10.
This commit is contained in:
Kevin Buettner
parent
329baa9572
commit
bc3c6b3642
2 changed files with 157 additions and 3 deletions
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@ -1,3 +1,10 @@
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2014-02-17 Kevin Buettner <kevinb@redhat.com>
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* rl78-tdep.c (rl78_g10_register_name): New function.
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(rl78_return_value): Add g10 support.
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(rl78_gdbarch_init): Register rl78_g10_register_name for the
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g10.
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2014-02-17 Doug Evans <xdje42@gmail.com>
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* Makefile.in (SUBDIR_GUILE_OBS): Resort alphabetically.
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153
gdb/rl78-tdep.c
153
gdb/rl78-tdep.c
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@ -385,6 +385,136 @@ rl78_register_name (struct gdbarch *gdbarch, int regnr)
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return reg_names[regnr];
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}
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/* Implement the "register_name" gdbarch method for the g10 variant. */
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static const char *
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rl78_g10_register_name (struct gdbarch *gdbarch, int regnr)
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{
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static const char *const reg_names[] =
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{
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"", /* bank0_r0 */
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"", /* bank0_r1 */
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"", /* bank0_r2 */
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"", /* bank0_r3 */
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"", /* bank0_r4 */
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"", /* bank0_r5 */
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"", /* bank0_r6 */
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"", /* bank0_r7 */
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"", /* bank1_r0 */
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"", /* bank1_r1 */
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"", /* bank1_r2 */
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"", /* bank1_r3 */
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"", /* bank1_r4 */
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"", /* bank1_r5 */
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"", /* bank1_r6 */
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"", /* bank1_r7 */
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"", /* bank2_r0 */
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"", /* bank2_r1 */
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"", /* bank2_r2 */
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"", /* bank2_r3 */
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"", /* bank2_r4 */
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"", /* bank2_r5 */
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"", /* bank2_r6 */
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"", /* bank2_r7 */
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"", /* bank3_r0 */
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"", /* bank3_r1 */
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"", /* bank3_r2 */
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"", /* bank3_r3 */
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"", /* bank3_r4 */
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"", /* bank3_r5 */
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"", /* bank3_r6 */
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"", /* bank3_r7 */
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"psw",
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"es",
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"cs",
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"",
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"", /* spl */
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"", /* sph */
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"pmc",
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"mem",
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"pc",
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"sp",
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"x",
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"a",
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"c",
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"b",
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"e",
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"d",
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"l",
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"h",
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"ax",
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"bc",
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"de",
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"hl",
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"bank0_r0",
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"bank0_r1",
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"bank0_r2",
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"bank0_r3",
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"bank0_r4",
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"bank0_r5",
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"bank0_r6",
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"bank0_r7",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"bank0_rp0",
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"bank0_rp1",
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"bank0_rp2",
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"bank0_rp3",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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""
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};
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return reg_names[regnr];
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}
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/* Implement the "register_reggroup_p" gdbarch method. */
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static int
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@ -974,6 +1104,7 @@ rl78_return_value (struct gdbarch *gdbarch,
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{
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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ULONGEST valtype_len = TYPE_LENGTH (valtype);
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int is_g10 = gdbarch_tdep (gdbarch)->elf_flags & E_FLAG_RL78_G10;
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if (valtype_len > 8)
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return RETURN_VALUE_STRUCT_CONVENTION;
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@ -982,15 +1113,21 @@ rl78_return_value (struct gdbarch *gdbarch,
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{
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ULONGEST u;
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int argreg = RL78_RAW_BANK1_R0_REGNUM;
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CORE_ADDR g10_raddr = 0xffec8;
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int offset = 0;
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while (valtype_len > 0)
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{
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regcache_cooked_read_unsigned (regcache, argreg, &u);
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if (is_g10)
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u = read_memory_integer (g10_raddr, 1,
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gdbarch_byte_order (gdbarch));
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else
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regcache_cooked_read_unsigned (regcache, argreg, &u);
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store_unsigned_integer (readbuf + offset, 1, byte_order, u);
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valtype_len -= 1;
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offset += 1;
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argreg++;
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g10_raddr++;
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}
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}
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@ -998,15 +1135,22 @@ rl78_return_value (struct gdbarch *gdbarch,
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{
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ULONGEST u;
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int argreg = RL78_RAW_BANK1_R0_REGNUM;
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CORE_ADDR g10_raddr = 0xffec8;
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int offset = 0;
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while (valtype_len > 0)
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{
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u = extract_unsigned_integer (writebuf + offset, 1, byte_order);
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regcache_cooked_write_unsigned (regcache, argreg, u);
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if (is_g10) {
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gdb_byte b = u & 0xff;
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write_memory (g10_raddr, &b, 1);
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}
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else
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regcache_cooked_write_unsigned (regcache, argreg, u);
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valtype_len -= 1;
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offset += 1;
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argreg++;
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g10_raddr++;
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}
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}
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@ -1140,7 +1284,10 @@ rl78_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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/* Registers. */
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set_gdbarch_num_regs (gdbarch, RL78_NUM_REGS);
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set_gdbarch_num_pseudo_regs (gdbarch, RL78_NUM_PSEUDO_REGS);
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set_gdbarch_register_name (gdbarch, rl78_register_name);
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if (tdep->elf_flags & E_FLAG_RL78_G10)
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set_gdbarch_register_name (gdbarch, rl78_g10_register_name);
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else
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set_gdbarch_register_name (gdbarch, rl78_register_name);
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set_gdbarch_register_type (gdbarch, rl78_register_type);
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set_gdbarch_pc_regnum (gdbarch, RL78_PC_REGNUM);
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set_gdbarch_sp_regnum (gdbarch, RL78_SP_REGNUM);
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